{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# 注意！请根据提示操作！\n",
    "\n",
    "如果当页面加载完成，你还是看到了这条提示\n",
    "\n",
    "那么你的notebook并未被信任，导致代码无法正常运行\n",
    "\n",
    "点击右上角的`不可信`，将本notebook列入可信列表，即可正常运行。\n",
    "\n",
    "![可信按钮](./mgr/trust.png)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## 注释\n",
    "\n",
    "在Python中，可以用#符号来对该行中该符号之后的内容注释，注释后的内容只供代码编写者观看参考，程序在运行时不会涉及注释的内容。"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print('井号后面的内容对代码运行没有任何影响')  # 这个就是注释，在代码运行中是不会运行到这里的。"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "一般而言，程序届习惯把单独的一行注释，当作对注释行下面代码的解释"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "print('Hello World')\n",
    "# print也可以输出中文，这段注释就是对下面一行代码的解释，而不是对上面代码的解释。\n",
    "print('你好')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
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       "<hr>\n",
       "<link rel=\"stylesheet\" href=\"//cdn.bootcss.com/mdui/0.4.3/css/mdui.min.css\">\n",
       "<script src=\"./mgr/submit.js\"></script>\n",
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       "    <div class=\"mdui-col-xs-3\">\n",
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       "<div id=\"html_output\">\n",
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       "<IPython.core.display.HTML object>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "%%html\n",
    "<hr>\n",
    "<link rel=\"stylesheet\" href=\"//cdn.bootcss.com/mdui/0.4.3/css/mdui.min.css\">\n",
    "<script src=\"./mgr/submit.js\"></script>\n",
    "<script src=\"./mgr/hide.js\"></script>\n",
    "<div class=\"mdui-container-fluid\">\n",
    "    <div class=\"mdui-col-xs-3\">\n",
    "        <button class=\"mdui-btn mdui-btn-raised mdui-ripple mdui-color-blue-grey-500\" onclick=\"next_page(-1)\">上一章</button>\n",
    "    </div>\n",
    "    <div class=\"mdui-col-xs-3\">\n",
    "        <button class=\"mdui-btn mdui-btn-raised mdui-ripple mdui-color-blue-grey-700\" onclick=\"window.open('/tree')\">目录</button>\n",
    "    </div>\n",
    "    <div class=\"mdui-col-xs-3\">\n",
    "        <button class=\"mdui-btn mdui-btn-raised mdui-ripple mdui-color-blue-grey-900\" onclick=\"next_page(1)\">下一章</button>\n",
    "    </div>\n",
    "</div>\n",
    "<div id=\"html_output\">\n",
    "</div>"
   ]
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